Patek Phillippe & Cie., Genève, No. 861137, case No. 681113, made in 1954, First class "Bulletin d' Observatoire" Chronometer, awarded 43.77 points at the Geneva Observatory. Extremely fine and rare, 18ct gold gentleman's wristwatch. | Important Watches and Wristwatches | St-moritz, Badrutt's Palace Hotel, 25th February 1990

Important Watches and Wristwatches

St-moritz, Badrutt's Palace Hotel, Feb 25, 1990

LOT 259

Patek Phillippe & Cie., Genève, No. 861137, case No. 681113, made in 1954, First class "Bulletin d' Observatoire" Chronometer, awarded 43.77 points at the Geneva Observatory. Extremely fine and rare, 18ct gold gentleman's wristwatch.

CHF 300,000 - 350,000

Sold: CHF 608,500

C. massive. polished, waterproof, screwed back, concave bezel. D. silver with applied gold indexes + auxiliary seconds dial at 9 o'clock. "Dauphine" gold hands. M. 13"', Geneva Quality Hall Mark, rhodiumed, "fausses-côtes" decoration, 21 jewels. lever escapement adjusted by Andre Zibach, specialized in Observatory Chronometers, Guillaume balance, adjusted to heat, cold isochronism and 5 positions, bent steel balance-spring, micrometer regulator. Dial, case and movement signed. In excellent condition. Diam. 38 mm.

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A similar watch is published in "Patek Philippe Wristwatches", page 194. Timing Contests: - Mean daily compensation error: 15,92 - Rate recovery after extremes: -0,22 - Error of compensation per degree C: - 3,81 - Mean error in 6 positions: 5,32 - Subsidiary compensation error: + 0,78 It is the first time that such a chronometer wirstwatch by Patek Philippe is offered at auction. This is the most interesting one of the two others known, for its case which has the same design as the Ref. 2499, the famous perpetual calendar chronograph with round buttons, and furthermore, it is waterproof.